Sagittal plane: Difference between revisions
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A '''sagittal plane''' of the human body is an imaginary plane that travels from the top to the bottom of the body, dividing it into left and right portions. | A '''sagittal plane''' of the human body is an imaginary plane that travels from the top to the bottom of the body, dividing it into left and right portions. | ||
== | ==Variations== | ||
Examples include: | Examples include: | ||
* The [[median plane]] | * The terms ''[[median plane]]'' or ''mid-sagittal plane'' are sometimes used to describe the sagittal plane running through the midline. This plane cuts the body into two halves of equal portions (assuming [[bilateral symmetry]]),<ref>{{DorlandsDict|six/000083004|Median plane}}</ref> passing through midline structures such as the [[navel]] and [[Vertebral column|spine]]. It is one of the lines defining the [[Right upper quadrant (abdomen)|right upper quadrant]] of the [[human abdomen]]. | ||
* In general, planes that are parallel to the sagittal plane, but do not pass through the midline, are known as ''parasagittal''. | * In general, planes that are parallel to the sagittal plane, but do not pass through the midline, are known as ''parasagittal''. | ||
** The [[midclavicular line]] crosses through the [[clavicle]]. | ** The [[midclavicular line]] crosses through the [[clavicle]]. | ||
** Other sagittal lines/planes include the "lateral sternal" and "parasternal".<ref name="isbn0-7817-9013-1">{{cite book |author=Yokochi, Chihiro; Rohen, Johannes W. |title=Color Atlas of Anatomy: A Photographic Study of the Human Body |publisher=Lippincott Williams & Wilkins |location= | ** Other sagittal lines/planes include the "lateral sternal" and "parasternal".<ref name="isbn0-7817-9013-1">{{cite book |author=Yokochi, Chihiro; Rohen, Johannes W. |title=Color Atlas of Anatomy: A Photographic Study of the Human Body |publisher=Lippincott Williams & Wilkins |location=Hagerstown, MD |pages=2006. 217 p. |isbn=0-7817-9013-1 |oclc= |doi=}}</ref> | ||
==Terminology== | ==Terminology== | ||
Revision as of 20:18, 25 March 2009
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Overview
A sagittal plane of the human body is an imaginary plane that travels from the top to the bottom of the body, dividing it into left and right portions.
Variations
Examples include:
- The terms median plane or mid-sagittal plane are sometimes used to describe the sagittal plane running through the midline. This plane cuts the body into two halves of equal portions (assuming bilateral symmetry),[1] passing through midline structures such as the navel and spine. It is one of the lines defining the right upper quadrant of the human abdomen.
- In general, planes that are parallel to the sagittal plane, but do not pass through the midline, are known as parasagittal.
- The midclavicular line crosses through the clavicle.
- Other sagittal lines/planes include the "lateral sternal" and "parasternal".[2]
Terminology
The term is derived from the Latin word Sagitta, meaning "arrow". An image of an arrow piercing a body and passing from front (anterior) to back (posterior) would demonstrate the derivation of the term.
Sagittal Axis: Sagittal axis is the axis perpendicular to the sagittal plane, i.e. the sagittal axis lies in the frontal plane. Abduction and adduction is the movement of limb in frontal plane.
Frontal Axis: Frontal axis is the axis perpendicular to the frotal plane, i.e. the frontal axis lies in the sagittal plane. Extension and flexion is the movement of limb in sagittal plane.
Anatomy
From a broader perspective, it is one of the planes of the body used to describe the location of body parts in relation to each other. The other reference planes used in anatomy are:
- The coronal (or frontal) plane divides the body into dorsal and ventral (back and front) portions.
- A transverse (or horizontal) plane divides the body into cranial and caudal (top and bottom) portions.
See also
References
- ↑ Template:DorlandsDict
- ↑ Yokochi, Chihiro; Rohen, Johannes W. Color Atlas of Anatomy: A Photographic Study of the Human Body. Hagerstown, MD: Lippincott Williams & Wilkins. pp. 2006. 217 p. ISBN 0-7817-9013-1.
Template:Anatomical planes da:Sagittalplan de:Sagittalebene Template:WH Template:WikiDoc Sources